A method and composition for increasing ovulation in female cattle wherein the cattle are administered with the composition so as to produce a mean steroid binding antibody titre in the female cattle of from 1 in 100 to 1 in 5000 at the time of ovulation.
The composition comprises (i) a conjugate of a steroid androgen, such as androstenedione or testosterone, or of a steroid oestrogen, such as oestrone, and an immunogenic protein, such as human serum albumin, and (ii) acid anhydrides of the steroid derivative, the composition containing from 10 to 90% of the steroid moiety in the form of the anhydrides.
一种增加雌性牛排卵的方法和组合物,其中给牛施用该组合物,使雌性牛在排卵时产生的平均类
固醇结合
抗体滴度为1/100至1/5000。 该组合物包括(i)类
固醇雄激素(如
雄烯二酮或
睾酮)或类
固醇雌激素(如
雌酮)与免疫原蛋白(如人
血清白蛋白)的共轭物,以及(ii)类
固醇衍
生物的酸酐,该组合物含有10%至90%以酸酐形式存在的类
固醇分子。